(a) Except as otherwise provided by Subsection (b), a proceeding brought by a presumed father, the mother, or another individual to adjudicate the parentage of a child having a presumed father shall be commenced not later than the fourth anniversary of the date of the birth of the child.
(b) A proceeding seeking to adjudicate the parentage of a child having a presumed father may be maintained at any time if the court determines that:
(1) the presumed father and the mother of the child did not live together or engage in sexual intercourse with each other during the probable time of conception; or
(2) the presumed father was precluded from commencing a proceeding to adjudicate the parentage of the child before the expiration of the time prescribed by Subsection (a) because of the mistaken belief that he was the child's biological father based on misrepresentations that led him to that conclusion.